Improvement in ditching-machines



G. M. BROWN. Ditching-Machines.

Patented June 10 1873.

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UNITED STATES PATENT OFFICE.

CHARLES M. BROWN, OF BALTIMORE, MARYLAND.

IM PROVEMENT IN DlTCHlNG-MACHINES.

Specification forming part of Letters Patent No. 139,765, dated June 10,1873 application filed April 11, 1873.

To all whom it may concern:

Be it known that I, CHARLES M. BROWN, of Baltimore, in the State ofMaryland, have invented certain Improvements in Ditching- Machines, ofwhich the following is a specification and I do hereby declare that inthe same is contained a full, clear, and exact description of my saidinvention, reference being had to the accompanying drawing and to theletters of reference marked thereon.

My invention relates to certain'improvements upon that class ofditching-machines in which the blade is attached to the casing of thetraveling or rolling Wheel or wheels of the machine, and the dirtcarried up within the casing by the wheel, as an elevator, to the upperpart of the said casing and a spout joining therewith, against theforward part of which spout the dirt is thrown, whence it falls, of itsown weight, down the spout and out from the machine. The nature of myinvention consists, first, in the combination of a series ofspring-cutters with the rollingwh-eel and a cam or equivalent device,suspended fixedly from the stationary axle of from the periphery of therolling-wheel, and

cut off the earth into a section inclosed between the rolling-wheel andthe sides of the casing. As the rolling-wheel revolves the cam forcesout other of the spring-cutters, and keeps them in such position, theycarryin g up the several sections of the earth, until the upper end ofthe cam is reached; and'the foremost spring-cutter, being released,starts back, allowing the earth confined between it and the one nextfollowing to fall from the machine through the spout. The cam, as willbe understood from the foregoing, has the greater part of its peripheryconcentric with that of the rolling-wheel. My invention further consistsin the combination of the rolling-wheel, spring-cutters, and cam withthe exterior casing, spout, and ditching-knife, producing the resultabove named.

1n the further description of my invention which follows due referencemust be had to the accompanying drawing, in which- Figure 1 represents aside view of my in vention; Fig. 2, a plan of the same; and Fig. 3 aback view of the same.

Similar letters of reference indicate similar parts of the invention inall the views.

A is the rolling-wheel, revolving upon the fixed axle a, to which theshafts B are at tached. G is the casing, having the handles 0 and spout01 secured thereto. suspended loosely from the axle a in such a mannerthat the operator at the handles can regulate at pleasure the cut of theditchingblade. The blade'is attached to the lower part of the casing,and shown by D. The spring-cutters are represented by b, and formed ofstout steel plates bent at a right angle, the cutting part passingthrough slots in the rim of the rolling-wheel, and the other beingsecurely attached to the inner part of the wheel-rim. E is the cam,suspended fixedly from the axle a, the, lower front portion Having thusdescribed my invention, what I claim as new, and wish to secure byLetters Patent of the United States, is-

1. The combination of the series of springcutters b with therolling-wheel A and cam E, the wheel being loose and the cam fixed uponthe axle a. substantially as and for the purpose specified.

2. The combination of the rolling-wheel A, spring-cutters b, andcam Ewith the casing O, ditching-blade D, and spout 01, substantially as andfor the purposes specified.

In testimony whereof I have hereto subscribed my name this 10th day ofApril, in the year of our Lord 1873.

CHARLES M. BROWN.

Witnesses:

EDW. HAYES, WM. T. HOWARD.

The casing is,

